In a message dated 97-02-05 12:03:06 EST, DDOORNBOS@rr5.rr.intel.com (Where
do I get my Rhinestone Bunny Suit) writes:
> What is wrong with carbon build up? You will not get carbon
> build up on any moving surface, Valve seats, Piston Walls where
> the rings move against, or Valve Guides. The only thing carbon
> build up does is reduce chamber volume increasing compression
> ratio. And carbon build up really doesn't get to be that
> much if you bring the RPM's up on your car every so often it
> blows it out.
>
> Maybe carbon build up was a big deal 50years ago in looser
> tolerance engines, but it is not today. I would never do this to
> any of my cars.
>
> dan
I have rebuilt engines with so much carbon build up on the intake valves it
was literally a cone of carbon that should have blocked all flow of gasses to
the chamber, maybe giving .020 clearance when the valve is open. However I
don't think this method of cleaning is the best.
Bruce McGuire
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